Quick-opening packless valve.



J. G. ENGELHART.

QUICK OPENING PACKLESS VALVE.

APPLICATION FILED AUG-5. I912.

Patented May 15, 1917.

I- ll P RS m.ruomurnouv/Asnmamm u c %TA.TE% PATENT JOHN G. ENGELHART, 0FATLANTA, GEORGIA, ASSIGNOR OF ONE-HALF T0 LEVI IS 1 OSTRANDER, OF ST.LOUIS, MISSOURI.

QUICK-OPENING PACKLESS VALVE.

Application filed August 5, 1912.

To all whom it may concern Be it known that I, JOIIN G. ENGELHART, acitizen of the United States, and resident of Atlanta, Fulton county,Georgia, have invented certain new and useful limprovements inQuick-Opening Packless Valves, of which the following is a specificationcontaining a full, clear, and exact description, reference being had tothe accompanying drawings, forming a part hereof.

My invention relates to improvements in quick-opening packless valves,and is designed with special reference to radiators.

The object of my invention is to provide an improved construction ofradiator valves in which there is a means provided with a stem forpositively and rapidly moving the valve proper to seat or unseat and inwhich there is permanent packing devices around said stem, therebyobviating the necessity of packing the valve.

With the above purposes in view my invention consists in certain novelfeatures of construction and arrangement of parts as will be hereinaftermore fully described, pointed out in the claim and illustrated by theaccompanying drawings, in which Figure 1 is a vertical, sectionalelevation of a complete valve; and

Fig. 2 is a sectional plan taken through the valve and its stem.

Referring by numerals to the accompanying drawings:

3 designates the globular body portion of the valve provided with aninternally threaded inlet a for connection with a supply pipe and anexternally threaded outlet 5 for connection with a radiator (not shown).

At the upper end of the globular body 3 there is a neck 6 alining withthe inlet 1 and which is internally screw threaded to receive the bonnet7.

The bonnet 7 is formed hollow throughout its length, and at itslowermost end is provided. with an internal thread 8 which receives andsupports the valve proper 9 which is externally threaded and which isformed with a non-circular socket for a portion of its length in orderto receive the non-circular portion 10 of the valve-stern 11. In otherwords, the said valve has an angular socket, and said stem has anangular shank which engages said socket.

Formed in the bonnet 7 above the thread Specification of Letters Patent.

Patented May 15, 1917.,

Serial No. 713,394.

8 is a ground-joint 12 which receives the conical portion of the stemand, formed in the bonnet above the conical groundq'oint 12 is a guide13 which bears against the stem 11 and serves to hold the stem in a trueposition.

Formed in the bonnet above said guide 13 is a stuffing-box 14, thelowermost end of which inclines downwardly and inwardly toward the stem11.

15 designates a compressible-fiber packing, and 16 designates anextensile coil spring which bears upon the packing 15.

17 design ates a handle in which is formed, on its underneath face, anannular channel 18 in'which there is located a packing-ring 19 whichrests upon the upper end of the bonnet with the channel embracing theupper end of the bonnet.

The upper end of the stem is squared at 20, and the handle 17 isprovided with a squared-opening to embrace the squared portion of thestem.

21 designates a screw which is arranged to secure the handle againstvertical movement relative to the stem.

,22 designates washers arranged at either end of the spring 16 so as toprevent wearing between the spring and the parts of the valve engagedthereby.

The lowermost end of the valve proper 9 is chamfered to form a cone 23which is arranged to fit the seat 24 in the body portion above the inlet1.

In order that there be a clearance between the opening in the valveproper and the squared portion 10 of the valve-stem for free movement ofthe valve proper vertically relative to the stem, the stem is formedrectangular at 10, while the opposing walls of the opening in the valveproper are convex or curved as shown in Fig. 2, and bear against saidstem only at the approximate centers of the facets of the stem, so thatthere is a minimum of bearing surface between the valve proper and thestem.

Assuming the parts to be in the positions shown in the drawings, it willonly be necessary to rotate said handle 17 to close or open the valve 9,as it is to be observed that the stem is provided with a conical portionand has connected thereto a handle, and that there is an extensile coilspring which bears upwardly against the handle, thereby holding the coneseated. to form a fluid-tight joint to prevent the escape of fluidupwardly through the bonnet and around the stem.

It is to be observed further that the said spring bears downwardlyagainst a fiber packing and compresses it against the stem around acircular portion of the stem. This fiber packing automatically adjustsitself to wear, that is in case there is wear the spring will alwayshold the packing to form a' fluid-tight joint around the stem.

The said spring 16 not only holds the packing so that same will beautomatically adjusted, as just described, but the spring also pressesupwardly upon the said washer 22 beneath the handle 17, and therebyholds said handles packing-ring 19. (and said handle) up, and preventstoo close fit, and consequent excessive friction, between the saidpacking-ring and the upper edge of the said bonnet.

I claim:

An improved quick-opening valve, comprising a suitable body having theusual inlet and outlet and 'alve-seat; a valvestem; a valve loose uponsaid stem so that it may move vertically thereon, but arranged to rotatetherewith; a bonnet mounted upon said body; a threaded-connectionbetween said valve and said bonnet; a cone on said stem above saidvalve; a seat for said cone, formed in said bonnet; a body of packing insaid bonnet, above said cone; a handle secured to the upper end of saidstem, and having an annular channel in its underside; a packing-ringlocated in'said channel of the handle, and resting in contact with theupper end of said bonnet, with the walls of said channel embracing theupper end of said bonnet; a washer beneath said handle, within the upperend of said bonnet; and a coil spring surrounding the said valvestem,and bearing down upon said packing, and bearing upward upon said handlewasher, and tending to lift the handle off the bonnet.

In testimony whereof, I have signed my name to this specification, inpresence of two subscribing witnesses.

JOHN G. ENGELHART.

Witnesses:

E. W. KLEIN, T. A. SPLAN.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner, of Patents. Washington, 13.0.

